Level 3 BGP Advertisements
andy at nosignal.org
Wed Aug 29 19:39:18 UTC 2012
On 29 Aug 2012, at 20:28, Nick Olsen <nick at flhsi.com> wrote:
> In practice, We've always advertised our space all the way down to /24's
> but also the aggregate block (the /20 or the /21). Just so there was still
> reachability to our network in the event that someone made the foolish
> mistake of filtering lets say prefixes smaller /23...
Filtering your de-aggregated prefixes in the presence of covering aggregates in this case would certainly not be foolish. :-)
Please, unless you really know why you need to do otherwise, just originate your aggregates.
Every other Autonomous System
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